Sewage tank and sewage suction vehicle thereof

Abstract

The application relates to the technical field of sewage suction trucks, and provides a sewage tank, which comprises a tank body and a spray-washing assembly, the spray-washing assembly comprises at least one water supply pipe and a plurality of spray-washing pieces, the water supply pipe is arranged in the tank body, the plurality of spray-washing pieces are arranged at intervals along the length direction of the water supply pipe and are communicated with the water supply pipe, the spray-washing piece comprises a spray head, a plurality of spray holes are formed in the spray head, a cover plate for closing the spray holes is rotationally connected at the spray holes, a torsional spring is arranged at the rotation position of the cover plate, and the torsional spring is used for driving the cover plate to rotate towards the side close to the spray holes. Therefore, the clogging of the spray head can be reduced. In addition, the application further provides a sewage suction truck.

Description

Technical Field

[0001] This application relates to the field of vacuum trucks, and more particularly to a sewage tank and a vacuum truck thereof. Background Technology

[0002] A vacuum truck is a new type of sanitation vehicle that can collect, transfer, clean, and transport sludge and sewage, thus avoiding secondary pollution. Furthermore, vacuum trucks are self-priming and self-discharging, operate quickly, have a large capacity, and are convenient to transport, making them suitable for collecting and transporting liquid substances such as feces, mud, and crude oil.

[0003] Existing vacuum trucks consist of a truck body and a sewage tank. The sewage tank is equipped with a suction pipe and a vacuuming mechanism. The vacuuming mechanism creates a vacuum inside the sewage tank, lowering the pressure inside to atmospheric pressure, allowing the sewage to be sucked up through the suction pipe. After use, the sewage tank typically needs to be cleaned. In existing technology, a water supply pipe and several nozzles are installed inside the sewage tank. Water from the supply pipe is sprayed from the nozzles to clean the inside of the sewage tank.

[0004] However, during the vacuuming process, sewage from the sewage tank can easily enter the nozzles, causing them to become clogged, so improvements are needed. Summary of the Invention

[0005] In order to reduce the occurrence of nozzle clogging, firstly, this application provides a wastewater tank.

[0006] The wastewater tank provided in this application adopts the following technical solution:

[0007] A wastewater tank includes a tank body and a spray washing assembly. The spray washing assembly includes at least one water supply pipe and several spray washing elements. The water supply pipe is disposed in the tank body. The several spray washing elements are spaced apart along the length of the water supply pipe and communicate with the water supply pipe. Each spray washing element includes a nozzle with several spray holes. A cover plate for closing the spray holes is rotatably connected to each spray hole. A torsion spring is provided at the rotatable part of the cover plate, and the torsion spring is used to drive the cover plate to rotate toward the side closer to the spray holes.

[0008] By employing the above technical solution, during the cleaning of the tank's interior, the water supply pipe supplies water to each spray nozzle. Under the impact of the water, the nozzle cover rotates away from the spray hole, allowing water to spray from the spray hole into the tank, thus cleaning the inside of the wastewater tank. After cleaning, the cover rotates towards the spray hole under the action of a torsion spring, sealing the spray hole from the outside and minimizing the possibility of wastewater entering the spray hole, thereby reducing the likelihood of nozzle blockage.

[0009] Preferably, the spraying component further includes several fixing blocks, each fixing block having a first magnet embedded within it, and the cover plate having a second magnet embedded within it that attracts the first magnet.

[0010] By adopting the above technical solution, when the cover plate rotates towards the side away from the spray hole under the action of water pressure, the cover plate is fixed to the fixing block by the first magnet and the second magnet. The water in the spray hole does not need to impact the cover plate to spray out, thereby increasing the water pressure sprayed out of the spray hole and thus improving the cleaning effect.

[0011] Preferably, the spray washing assembly further includes a reset component, which includes a guide rod, a spring, and several connecting rods. The guide rod is movably inserted through the end of the nozzle away from the water supply pipe. The end of the guide rod away from the water supply pipe has a guide slope along its circumference. The spring is disposed between the guide rod and the nozzle and is used to drive the guide rod to move toward the side closer to the water supply pipe. One end of the connecting rod is fixedly connected to the cover plate, and the other end has a connecting slope. When the guide rod moves toward the side closer to the water supply pipe, the guide slope and the connecting slope cooperate to drive the cover plate to rotate toward the side closer to the spray hole.

[0012] By adopting the above technical solution, when the water supply pipe supplies water to the spray cleaning component, under the action of water pressure, the cover plate drives the connecting rod to move away from the spray hole and adheres to the fixed block. At the same time, the spring is compressed, and the guide rod moves away from the water supply pipe. Afterwards, when the water supply pipe stops supplying water, the guide rod moves towards the side closer to the water supply pipe under the action of the spring, so that the inclined surface of the guide wire contacts the inclined surface of the connecting wire. With the cooperation of the inclined surface of the guide wire and the inclined surface of the connecting wire, the cover plate rotates towards the side closer to the spray hole, and the cover plate disengages from the fixed block. The torsion spring causes the cover plate to seal the spray hole from the outside, eliminating the need for manual disengagement of the cover plate from the fixed block, thus facilitating the use of the spray cleaning component.

[0013] Preferably, a pulley that contacts the guide slope is rotatably connected to the connecting slope.

[0014] By adopting the above technical solution, the connecting inclined surface contacts the guide inclined surface through the pulley. Under the action of the pulley rotation, the guide rod makes the cover plate rotate toward the side closer to the spray hole, thereby facilitating the separation of the cover plate from the fixing block.

[0015] Preferably, the reset component further includes a sealing sleeve, which is disposed on the inner side of the nozzle away from the water supply pipe. A sealing plate is disposed on the guide rod near the water supply pipe, and the sealing plate is slidably connected to the sealing sleeve. A space is formed between the nozzle, the sealing sleeve and the sealing plate that is relatively isolated from the interior of the nozzle. The guide rod and the spring are located within the space.

[0016] By adopting the above technical solution, a sealing sleeve and a sealing plate are set up so that the guide rod and the spring are in a relatively isolated space, so that the water pressure can compress the spring, and reduce the contact between water and the guide rod and the spring, reduce the rusting of the guide rod and the spring, and improve the service life.

[0017] Preferably, the spray washing assembly further includes a water inlet pipe, which is located on the outside of the tank and is connected to the water supply pipe and an external water source.

[0018] By adopting the above technical solution and setting up water inlet pipes, it is possible for staff to connect the water source to each water supply pipe and ensure that the water pressure in each water supply pipe is consistent, thereby improving the cleaning effect.

[0019] Preferably, the nozzle has several grooves that communicate with the spray holes, and the cover plate is embedded in the grooves.

[0020] By adopting the above technical solution, and by opening several grooves, the cover plate is embedded in the grooves, which improves the sealing between the nozzle and the cover plate, further preventing sewage from the sewage tank from entering the nozzle, thereby reducing the occurrence of nozzle blockage.

[0021] Preferably, the water supply pipe is provided with a plurality of mounting sleeves along its length, and the nozzle is threadedly connected to the mounting sleeves.

[0022] By adopting the above technical solution, the nozzle is threadedly connected to the mounting sleeve, which facilitates the installation and removal of the nozzle, thereby making it convenient for the maintenance or replacement of the nozzle.

[0023] Secondly, this application also provides a sewage suction truck.

[0024] The vacuum truck provided in this application adopts the following technical solution:

[0025] A vacuum truck includes a vacuum truck body, a hydraulic cylinder, and a sewage tank as described above, one end of the tank body being hinged to the vacuum truck body, the cylinder body of the hydraulic cylinder being hinged to the vacuum truck body, and the output shaft of the hydraulic cylinder being hinged to the sewage tank.

[0026] By adopting the above technical solution, after the sewage tank is cleaned, the sewage tank is tilted by a hydraulic cylinder to facilitate the discharge of water from the sewage tank.

[0027] Preferably, it also includes a vacuuming mechanism, which includes a vacuum pump and a vacuuming pipe. The vacuum pump is located on the outside of the tank. One end of the vacuuming pipe is connected to the vacuum pump, and the other end is connected to the water inlet pipe. A switch valve is provided on the vacuuming pipe.

[0028] By adopting the above technical solution, after the sewage tank is cleaned, the switch valve is opened, so that the vacuum pump evacuates the water inlet pipe through the vacuum pipe, thereby making the inside of the nozzle a negative pressure state, which in turn makes the cover plate more tightly seal the spray hole.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. During the cleaning of the tank interior, the water supply pipe supplies water to each spray nozzle. Under the impact of the water, the nozzle cover rotates away from the spray holes, allowing water to spray from the spray holes into the tank interior, thus cleaning the inside of the wastewater tank. After cleaning, the cover rotates towards the spray holes under the action of a torsion spring, sealing the spray holes from the outside and minimizing the possibility of wastewater entering the spray holes, thereby reducing the likelihood of nozzle blockage.

[0031] 2. When the cover plate rotates away from the spray hole under water pressure, the cover plate is fixed to the fixing block by the first magnet and the second magnet. The water in the spray hole does not need to impact the cover plate to spray out, so as to increase the water pressure sprayed out of the spray hole and thus improve the cleaning effect.

[0032] 3. When the water supply pipe supplies water to the spray cleaning component, under water pressure, the cover plate moves the connecting rod away from the spray hole and adheres to the fixed block. At the same time, the spring is compressed, and the guide rod moves away from the water supply pipe. Afterwards, when the water supply pipe stops supplying water, the guide rod moves towards the water supply pipe under the action of the spring, causing the inclined surface of the guide wire to contact the inclined surface of the connection. With the cooperation of the inclined surface of the guide wire and the inclined surface of the connection, the cover plate rotates towards the spray hole, disengaging from the fixed block. The torsion spring causes the cover plate to seal the spray hole from the outside, eliminating the need for manual disengagement of the cover plate from the fixed block, thus facilitating the use of the spray cleaning component. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the sewage tank in the embodiments of this application;

[0034] Figure 2 This is a schematic diagram of the overall structure of the spray washing assembly in the embodiments of this application;

[0035] Figure 3 This is a schematic diagram of the explosion of the spraying component and water supply pipe in the embodiments of this application;

[0036] Figure 4 yes Figure 3 Enlarged diagram of part A in the diagram;

[0037] Figure 5 This is a schematic cross-sectional view of the spraying component and the resetting component in the embodiments of this application;

[0038] Figure 6 yes Figure 5Enlarged schematic diagram of part B in the diagram;

[0039] Figure 7 This is a schematic diagram of the overall structure of the vacuum truck in the embodiments of this application.

[0040] Reference numerals: 1. Tank body; 2. Spraying assembly; 21. Water supply pipe; 211. Mounting sleeve; 22. Spraying component; 221. Nozzle; 222. Groove; 223. Spray hole; 224. Rotating shaft; 225. Cover plate; 226. Torsion spring; 227. Fixing block; 23. Water inlet pipe; 24. Reset component; 241. Guide rod; 242. Spring; 243. Connecting rod; 244. Guide slope; 245. Sealing plate; 246. Connecting slope; 247. Pulley; 248. Sealing sleeve; 3. Tank cover; 4. Sewage suction truck body; 5. Hydraulic cylinder; 6. Vacuuming mechanism; 61. Vacuum pump; 62. Vacuuming pipe; 63. Switch valve; 7. Sewage suction pipe. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0042] This application discloses a sewage tank.

[0043] Reference Figure 1 and Figure 2 The wastewater tank includes a tank body 1 and a spray washing assembly 2. The tank body 1 is hollow and open at one end, with a tank cover 3 hinged to the open end. The spray washing assembly 2 includes at least one water supply pipe 21, several spray washing elements 22, and a water inlet pipe 23. The water supply pipe 21 is located inside the tank body 1 and is arranged along the length of the water supply pipe 21. To improve the cleaning effect, four water supply pipes 21 are arranged at intervals around the circumference of the tank body 1. The several spray washing elements 22 are evenly spaced along the length of the water supply pipe 21 and are all connected to the water supply pipe 21. The water inlet pipe 23 is fixedly connected to the outside of the tank body 1, and is connected to each water supply pipe 21 and an external water source.

[0044] Reference Figure 3 and Figure 4Specifically, the spraying component 22 includes a nozzle 221, one end of which is open and has an internal thread. A corresponding number of mounting sleeves 211 are integrally connected to the water supply pipe 21. The mounting sleeves 211 have external threads, and the nozzles 221 are detachably connected to the mounting sleeves 211 via their internal threads. The end of the nozzle 221 furthest from the water supply pipe 21 is prismatic in shape; this embodiment uses a quadrangular prism as an example. Four grooves 222 are formed on the periphery of the nozzle end, each with a different orientation. Spray holes 223 are formed at each groove 222, communicating with both the groove and the interior of the nozzle 221, allowing the nozzle 221 to spray at multiple angles. A cover plate 225 is rotatably connected to the groove 222 via a rotating shaft 224. A torsion spring 226 is fitted on the rotating shaft 224. The torsion spring 226 drives the cover plate 225 to rotate toward the side closer to the nozzle 223, so that the cover plate 225 closes the nozzle 223. The cover plate 225 is embedded in the groove 222, which improves the sealing performance of the nozzle 223.

[0045] When cleaning the inside of tank 1 is required, first close the tank cover 3, then supply water to each nozzle 221 through each water supply pipe 21. Under the impact of water pressure, the cover plate 225 rotates away from the nozzle 223, thus releasing the cover plate 225 from sealing the nozzle 223. Water then sprays out from the nozzle 223 into the tank 1, cleaning the inside of the sewage tank. After cleaning is completed, the cover plate 225 returns to its original position under the action of the torsion spring 226, maintaining the sealed state of the nozzle 223. This seals the nozzle 223 from the outside, minimizing the possibility of sewage from the sewage tank entering the nozzle 223 and reducing the likelihood of nozzle 221 clogging.

[0046] Reference Figure 4 The spray nozzle 22 also includes four fixing blocks 227. The fixing blocks 227 are fixedly connected to the nozzle 221 and located on the side of the cover plate 225 facing away from the spray hole 223. A first magnet (not shown) is embedded in the fixing block 227, and a second magnet (not shown) is embedded in the cover plate 225. The first magnet and the second magnet attract each other. When the cover plate 225 rotates towards the side away from the spray hole 223 under water pressure, the cover plate 225 abuts against the fixing blocks 227 and is fixed by the first and second magnets, thus keeping the spray hole 223 open. Water does not need to impact the cover plate 225 before spraying out, thereby increasing the water pressure sprayed from the spray hole 223 and improving the cleaning effect.

[0047] Reference Figure 5 and Figure 6The spray assembly 2 also includes a reset component 24. Specifically, the reset component 24 includes a guide rod 241, a spring 242, and several connecting rods 243. The guide rod 241 is a round rod with a "T"-shaped cross-section. The guide rod 241 is movably inserted through the end of the nozzle 221 away from the water supply pipe 21, and the outer end of the guide rod 241 has a guide slope 244 along its circumference. The inner end of the guide rod 241 is integrally connected to a sealing plate 245. One end of the spring 242 is fixedly connected to the inner side of the nozzle 221, and the other end is fixedly connected to the sealing plate 245 to drive the guide rod 241 to move towards the side closer to the water supply pipe 21. The connecting rods 243 are rectangular rods. One end of the connecting rod 243 is fixedly connected to the cover plate 225 away from the spray hole 223, and the other end has a connecting slope 246, which is parallel to the guide slope 244.

[0048] When water is supplied through the water supply pipe 21, the spring 242 is compressed under water pressure, and the guide rod 241 moves away from the water supply pipe 21. At the same time, the cover plate 225 rotates away from the nozzle 223 and is fixed to the fixing block 227. At this time, the guide slope 244 is located on the side of the connecting slope 246 away from the nozzle 221. After cleaning, when the water supply pipe 21 stops supplying water, the guide rod 241 moves towards the side closer to the water supply pipe 21 under the action of the spring 242. The guide slope 244 contacts the connecting slope 246 to drive the cover plate 225 to rotate towards the side closer to the nozzle 223, so that the cover plate 225 is separated from the fixing block 227. Under the action of the torsion spring 226, the cover plate 225 returns to its original position and seals the nozzle 223 from the outside. There is no need to manually separate the cover plate 225 from the fixing block 227, so as to facilitate the use of the spray cleaning component 22.

[0049] The connecting rod 243 is rotatably connected to the pulley 247 on the connecting inclined surface 246. The pulley 247 is in contact with the guide inclined surface 244, which makes the guide rod 241 rotate the cover plate 225 more smoothly, so that the guide rod 241 can rotate the cover plate 225 toward the side closer to the spray hole 223, thereby facilitating the separation of the cover plate 225 from the fixing block 227.

[0050] Furthermore, the reset component 24 also includes a sealing sleeve 248. One end of the sealing sleeve 248 is fixedly connected to the inner wall of the end of the nozzle 221 away from the water supply pipe 21. The sealing plate 245 is slidably connected inside the sealing sleeve 248, making the movement of the guide rod 241 more stable. Additionally, a relatively enclosed space is formed between the inner wall of the nozzle 221 end, the sealing sleeve 248, and the sealing plate 245, and the sealing plate 245 and the sealing sleeve 248 are sealed together, thus isolating the guide rod 241 and the spring 242 within the space from the inside of the nozzle 221, preventing the spring from contacting the water. It should be noted that there is a certain gap between the guide rod 241 and the nozzle 221 where the rod passes through. When the spring 242 is in its natural state, the sealing plate 245 is located inside the sealing sleeve 248.

[0051] The implementation principle of this embodiment is as follows: When it is necessary to clean the inside of the tank 1, the tank cover 3 is closed first, and then water is supplied to each nozzle 221 through each water supply pipe 21. Under the impact of water pressure, the cover plate 225 rotates away from the nozzle 223, thereby releasing the cover plate 225 from the nozzle 223. Water is then sprayed out from the nozzle 223 into the tank 1, thus cleaning the inside of the sewage tank. After cleaning is completed, the cover plate 225 is reset under the action of the torsion spring 226, maintaining the state of sealing the nozzle 223, thus sealing the nozzle 223 from the outside and minimizing the possibility of sewage from the sewage tank entering the nozzle 223, thereby reducing the possibility of nozzle 221 clogging.

[0052] This application also discloses a sewage suction truck.

[0053] Reference Figure 7 The vacuum truck includes a vacuum truck body 4, a hydraulic cylinder 5, and a sewage tank as described above. The end of the tank 1 away from the driver's cab of the vacuum truck body 4 is hinged to the vacuum truck body 4. The cylinder body of the hydraulic cylinder 5 is hinged to the vacuum truck body 4, and the output shaft of the hydraulic cylinder 5 is hinged to the sewage tank. After the sewage tank is cleaned, the hydraulic cylinder 5 drives the sewage tank to rotate so that the water inside the sewage tank can be poured out.

[0054] The vacuum truck also includes a vacuuming mechanism 6 and a vacuuming pipe 7. The vacuuming mechanism 6 includes a vacuum pump 61 and a vacuuming pipe 62. The vacuum pump 61 is fixedly connected to the upper side of the tank 1. The vacuum pump 61 creates a vacuum inside the tank 1 to cooperate with the vacuuming pipe 7 for vacuuming. One end of the vacuuming pipe 62 is connected to the vacuum pump 61, and the other end is connected to the water inlet pipe 23. A switch valve 63 is installed on the vacuuming pipe 62. When the switch valve 63 is open, each nozzle 221 is in a vacuum state. Under atmospheric pressure, the cover plate 225 is more tightly embedded in the groove 222, thereby making the cover plate 225 more tightly seal the nozzle 223.

[0055] The implementation principle of this embodiment is as follows: after the sewage tank is cleaned, the sewage tank is driven to rotate by the oil cylinder 5 so that the water inside the sewage tank can be poured out. The vacuum pump 61 of the sewage suction truck itself is used to vacuum the nozzle 221 so that the cover plate 225 can more tightly seal the nozzle 223.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sewage tank, characterized in that: The system includes a tank (1) and a spray washing assembly (2). The spray washing assembly (2) includes at least one water supply pipe (21) and several spray washing components (22). The water supply pipe (21) is located inside the tank (1). Several spray washing components (22) are spaced apart along the length of the water supply pipe (21) and communicate with the water supply pipe (21). Each spray washing component (22) includes a nozzle (221). The nozzle (221) has several spray holes (223). A cover plate (225) for sealing the spray holes (223) is rotatably connected to the spray holes (223). A torsion spring (226) is provided at the rotatable part of the cover plate (225). The torsion spring (226) is used to drive the cover plate (225) to rotate toward the side closer to the spray holes (223). The spraying component (22) also includes several fixing blocks (227), each fixing block (227) is embedded with a first magnet, and the cover plate (225) is embedded with a second magnet that attracts the first magnet; The spray assembly (2) further includes a reset component (24), which includes a guide rod (241), a spring (242), and several connecting rods (243). The guide rod (241) is movably inserted through the end of the nozzle (221) away from the water supply pipe (21). The end of the guide rod (241) away from the water supply pipe (21) has a guide slope (244) along its circumference. The spring (242) is disposed between the guide rod (241) and the nozzle. (221) and used to drive the guide rod (241) to move toward the side closer to the water supply pipe (21). One end of the connecting rod (243) is fixedly connected to the cover plate (225), and the other end is provided with a connecting inclined surface (246). When the guide rod (241) moves toward the side closer to the water supply pipe (21), the guide inclined surface (244) and the connecting inclined surface (246) cooperate to drive the cover plate (225) to rotate toward the side closer to the nozzle (223).

2. A sewage tank according to claim 1, characterized in that: A pulley (247) that contacts the guide slope (244) is rotatably connected to the connecting slope (246).

3. A sewage tank according to claim 1, characterized in that: The reset component (24) also includes a sealing sleeve (248), which is disposed on the inner side of the nozzle (221) away from the water supply pipe (21). A sealing plate (245) is disposed on the end of the guide rod (241) near the water supply pipe (21). The sealing plate (245) is slidably connected inside the sealing sleeve (248). A space is formed between the nozzle (221), the sealing sleeve (248) and the sealing plate (245) that is relatively isolated from the inside of the nozzle (221). The guide rod (241) and the spring (242) are located in the space.

4. A sewage tank according to claim 1, characterized in that: The spray washing assembly (2) also includes a water inlet pipe (23), which is located on the outside of the tank (1) and is connected to the water supply pipe (21) and an external water source.

5. A sewage tank according to claim 1, characterized in that: The nozzle (221) has several grooves (222) that are connected to the nozzle (223), and the cover plate (225) is embedded in the grooves (222).

6. A sewage tank according to claim 1, characterized in that: The water supply pipe (21) is provided with a plurality of mounting sleeves (211) along its own length direction, and the nozzle (221) is threadedly connected to the mounting sleeves (211).

7. A vacuum truck, characterized in that: The system includes a vacuum truck body (4), a hydraulic cylinder (5), and a sewage tank as described in any one of claims 1-6. One end of the tank body (1) is hinged to the vacuum truck body (4), the cylinder body of the hydraulic cylinder (5) is hinged to the vacuum truck body (4), and the output shaft of the hydraulic cylinder (5) is hinged to the sewage tank.

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